package com.itheima.anno;

import com.itheima.validation.StateValidation;
import jakarta.validation.Constraint;
import jakarta.validation.Payload;

import java.lang.annotation.*;

//以下4个注解均为元注解
@Documented
@Target(ElementType.FIELD)
@Retention(RetentionPolicy.RUNTIME)
@Constraint(validatedBy = {StateValidation.class})//指定提供校验规则的类
public @interface State {
    //提供校验失败后提供的提示信息
    String message() default "state参数只能是已发布或者草稿";
    //指定分组
    Class<?>[] groups() default {};
    //负载 获取到State注解的附加信息
    Class<? extends Payload>[] payload() default {};
}
